题解

#include <bits/stdc++.h>
using namespace std;
int main(){
string a;
int num=0,sum=0,other=0;
getline(cin,a);
for(int i=0;i<a.length();i++){
if(a[i]=='?'){
break;
}else if((a[i]>='a' && a[i]<='z') || (a[i]>='A' && a[i]<='Z')){
sum++;
}else if(a[i]>='0' && a[i]<='9'){
num++;
}else{
other++;
}
}
cout<<"Letters="<<sum<<endl;
cout<<"Digits="<<num<<endl;
cout<<"Others="<<other<<endl;
return 0;
}